Push-switch.



Gl. B. moms & ANDERSGN.

A PUSH SWTGH. APPLIUATIUT FILED AUQ. 1l, 1911..

I ggg Patented Das. l0, 1912.

and Euro ANDERSON, citizens of the United UNTE@ STATE@ GEORGE B. THOMAS AND ERIC ANDERSON, 0F BRIDGEPR-T; CONNECTICUT, ASSIGNORS TO THE APERKINSEIJlClRIC SWITCH MANUFACTURING COMPANY, 0F BRIDGEPORT, CONNECTICUT, A CORPORATION 0F CONNECTICUT.

PUSH-SWITCH,

To all whom 'it may concern:

. Be it known that We, GEORGE B. Tiroams States of America, residing vin the city oit Bridgeport, county of Fairfield, State ot Connecticut, have invented a certain new and useful Improved Push-Switch, ot which the following, is a specification.

Our invention relates to push switches, the obj ect of our invention-being to improve the same in certain novel featuresv illustratedv and hereinafter described.

In the accompanying drawing, Figure l is a side elevationot the push switch mechanism mounted upon a removabie face plate: Fig. 2 is a vertical section through the switchcasing; Fig. 3 is a perspective ot'the rocking member with the push buttons in position to be attached thereto; Figs. 4,

and 6 are respectively a side elevation, inverted plan and edge view of the switch frame; Figs. 7 and 8 are side and edge elevationsfrespectively, of the detent members; and Figs/9,10 and 11 are respectively, plan and side elevations at right angles to each other of the switch bar. v

The present improvements have been illustrated in a switch of the type in which the switch mechanism is carried upon a removable face plate. The switch comprises an insulating casing A, on which are mounted the wire terminals .15 for a double pole switch. The switch mechanism is'carried by the face plate B, also ot insulating material, having mounted upon it at the opposite ends thereof spring fingers iti-3.7 which engage the wire terminals trictionally when the face plate is adjusted in position.

The switch contacts 18--19 are preferably formed in one with these spring arms and are thus carried by the face plate. A channcled supporting frame 20, of U-shape, is Secured by its web 2l. beneath the face plate and the switch mechanism is pivoted upon `portions of this trame.

the spindle 22 mounted between the vertical A second spindle 23 1s mounted 1n sald frame anda rocker bar 24- of bridged construction rotates thereon.

v Specification of Letter-s Patent. Paggmtgr Digg, e j 'go. pplication filed August 11, 1911. Serial No. 643,607.

the perforated bearings 29 ot the rocker through slots 29 communicating therewith. To assemble the push buttons and rocker, the former are placed in horizontal position and their bearing lugs pass through the slots into the pcrtorations of the rocker, whereupon, when the push button is turned into its normal vertical position, its hearing lug cannot escape 'from its ljiearng in the rocker bv reason of the 'fact that these lugs'are wider than. the slots. I

Adjacent the frame 2O on one side, is arranged the vertical deient member 3l lguided in sliding engagement therewith by the two spindles 22-23 which pass through the slot 32 therein, and normally pressed into engaging Vposition by the small coil spring 38 which overlies the offset 34, This spring and offset are preferably recessed into the face plate. I l

The switch bar comprises a bridge member 35 with downturned flanges 36 which serve as engaging members for the detent on the one hand, and as stop 'lugs impinging against the opposite sides ot the forked end 37 of the frame, on the other hand. Theusual coil spring 38 on the switch spindle engages with its tree ends the opposite sides of the bridge members 39-40 of the rocker bar and switch lever, respectively.

The operation of the switch is readily understood. A5 the push button is depressed the rocker barv moves on its `pivot thereby tensioning the actuating spring'. Simultaneously, one of the lugs 41 on the rocher bar engages one ot the shoulders 42 ot thedetent meml'ier and raises it against the action of its spring', thereby freeing the switch bar, which, under the influence of the tensioned switch spring, snaps across into its opposite Contact position.

lille claim as our inventivi l. =in a push switch mechanism, a bridged rocker bar having at each end a pair of perforated lugs angled toward each other, in combination with push buttons having stems provided with bearing lugs, said perforated lugs forming bearings for the push. buttons and being slotted to permit the bearing ylugs ioo arm spindle piercing the same, aA spring pressed detent in sliding engagement with one end of said rocker. arm, said dote-nt being centrally slotted to receive said spindles and being held againstv lateral displacement thereby, and laterally Arecessedto form env gaging shoulders, in combination with pins carried b said rocker arm and engaging the shoul ers on opposite sides of saidr detent to vertically displace the same for the purpose specified, substantially as described. 3. In a push switch mechanism, a bridged rocker bar having pairs of bearing lugs angled toward each other, in combination with push buttons having stems provided with bearing lugs, said rocker bar being perforated to form bearing apertures and being horizontally slotted to'permit the bearing lugs on the stems of the push buttons to ente;` said bearingv apertures, said bearing lugs being wider than said slots whereby they are locked in the bearing peri'torations when the push buttons are in operative position, substantially as described. l

4. A .switch mechanism comprising a bridged switch bar having a pair of lugs offset from the opposite -sides of the bridge at each end to form combined detente and stopmembers, in combination with a frame member recessed to form shoulders against which said switch bar lugs impinge at thev ends of the switch stroke in opposite directions, together with a detent bar and means for moving the same vertically into or out of engagement with the lugs on said switch bar, substantially ,as described.

5. A switch comprising a rocker and a lever, one of the parts having a slot and the other being shaped to enter said slot when the parts are out of normal operative relation, said parts being adapted to be 'relatively turned throughV an angle of ap.

proximately ninety degrees to interlock the same whereby when they are lin normal operative relation they can not become accidentally separated. y

6. A switch comprising a rocker `and a lever, one of the parts having a slot and the companion part being shaped to enter Jthe slot when the parts are outof normal operative relation, lsaid parts being adaptedV to be relatively turned through an angle of approximately ninety degrees to interlock the same, and the slot having a circular portion to lpivotally receive said companion part when said parts are assembled.

In testimony whereoil we ha've signed our names to. this specification, in the presence of two subscribing witnesses.

` GEORGE B. THOMAS.

, ERIC ANDERSON. Witnesses:

G. W. Goonmnon, A. H. JONES. 

